Day at the Los Angeles premiere of Horrible Bosses in June 2011.
|Born||Charles Peckham Day
February 9, 1976
New York City, New York, U.S.
|Occupation||Actor, Writer, Producer|
|Spouse(s)||Mary Elizabeth Ellis (2006-present)|
Early life 
Day was born in New York City. His mother, Mary (née Peckham), is a piano teacher at The Pennfield School in Portsmouth, Rhode Island. His father, Dr. Thomas Charles Day, is a professor of Music History and Music Theory at Salve Regina University in Newport, Rhode Island. Day spent most of his childhood in Middletown, Rhode Island. He attended Pennfield School and graduated from Portsmouth Abbey School, both in Portsmouth, Rhode Island. He went on to attend Merrimack College in North Andover, Massachusetts where he was a shortstop on the baseball team.
Besides playing Charlie Kelly on the hit FX television series It's Always Sunny in Philadelphia, he is also the show's executive producer and one of its writers. He has also appeared on several other television shows such as Third Watch, Law & Order, and Reno 911!.
He appeared in New Line Cinema's Horrible Bosses in July 2011, opposite Jason Bateman, Jason Sudeikis, Kevin Spacey, Jennifer Aniston, Colin Farrell, and Jamie Foxx. He also had a role in the 2010 film Going the Distance, alongside Justin Long, Jason Sudeikis, and Drew Barrymore. In 2013 he will be appearing in Guillermo Del Toro's film Pacific Rim, and will voice a character named Art in the upcoming Pixar animated film Monsters University.
Day hosted the November 5, 2011 episode of Saturday Night Live (SNL) with Maroon 5 as the musical guest. He was the second cast member from It's Always Sunny in Philadelphia to host SNL (after Danny DeVito, though DeVito hosted SNL before It's Always Sunny in Philadelphia premiered). DeVito made a special appearance during Day's opening monologue.
Personal life 
Day has been married to actress Mary Elizabeth Ellis since March 4, 2006. Day and Ellis met in 2001 and were dating in 2004 when they appeared together on Reno 911 playing incestuous siblings. Ellis has a recurring role on It's Always Sunny in Philadelphia as "The Waitress," a coffee shop employee and an object of obsession for Day's character. The couple had their first child, a son named Russell Wallace, on December 15, 2011.
Day has written and improvised some of the music featured in It's Always Sunny in Philadelphia.
Film and television 
|Film and Television|
|2000||Mary and Rhoda||Mailroom Kid||TV movie|
|Madigan Men||Clerk||episode Three Guys, a Girl and a Conversation Nook|
|2001||Law & Order||Jeremy||episode Swept Away - A Very Special Episode|
|Late Summer||Trevor||Short film|
|Campfire Stories||Joe Boner|
|2001–2004||Third Watch||Michael Boscorelli||5 episodes|
|2004||Reno 911!||Inbred Twin||episode Not Without My Mustache|
|2005||Love Thy Neighbor||Video Clerk|
|2005–present||It's Always Sunny in Philadelphia||Charlie Kelly||94 episodes
|2008||Boldly Going Nowhere||TV pilot
|A Quiet Little Marriage||Adam|
|2010||Going the Distance||Dan|
|2011||Horrible Bosses||Dale Arbus|
|Saturday Night Live||Host||TV|
|2012||Unsupervised||Jesse Judge (voice)||episode Jesse Judge Lawncare Incorporated|
|2012||Saturday Night Live||Congressman Fenton Worthington Carrey||Jamie Foxx/Neyo|
|2012||American Dad!||Meth Head||Episode: Ad-Ventures in Hayleysitting|
|2013||Pacific Rim||Newt Geiszler|
|2013||Monsters University||Art||Voice role|
- Kate Ward (18). "'It's Always Sunny in Philadelphia': The cast tells their story". EW.com. Entertainment Weekly Inc. Retrieved 19 August 2012.
- Salve Regina University (2012). "Faculty". Salve Regina University. Salve Regina University. Retrieved 19 August 2012.
- Steve 'Frosty' Weintraub (11). "Jennifer Aniston, Jason Bateman, Charlie Day and Colin Farrell in Talks for HORRIBLE BOSSES for Director Seth Gordon". Collider.com. IndieClick Film Network. Retrieved 19 August 2012.
- Semigran, Aly (6 November 2011). "'Saturday Night Live' recap: Turning back the clock on Charlie Day(light savings time)". Entertainment Weekly. Retrieved 6 November 2011.
- Mary Elizabeth Ellis at the Internet Movie Database
- Interview with Charlie Day & Mary Elizabeth Ellis, MonsterFresh.com
- David Wolinsky (26). "RANDOM RULES Charlie Day". A.V. Club. Onion Inc. Retrieved 19 August 2012.
|Wikimedia Commons has media related to: Charlie Day|